A5033214254- Plant Molecular Biology Research
- Plant Reproductive Biology
- Plant nutrient uptake and metabolism
- Plant tissue culture and regeneration
- Plant and Biological Electrophysiology Studies
- Polysaccharides and Plant Cell Walls
- Cellular transport and secretion
- Plant Gene Expression Analysis
- Microtubule and mitosis dynamics
- Photosynthetic Processes and Mechanisms
- Light effects on plants
- Fungal and yeast genetics research
Institute of Science and Technology Austria
2019-2024
Umeå Plant Science Centre
2021-2024
University of Lausanne
2018-2024
Swedish University of Agricultural Sciences
2023
Patterning in plants relies on oriented cell divisions and acquisition of specific identities. Plants regularly endure wounds caused by abiotic or biotic environmental stimuli have developed extraordinary abilities to restore their tissues after injuries. Here, we provide insight into a mechanism restorative patterning that repairs wounding. Laser-assisted elimination different cells Arabidopsis root combined with live-imaging tracking during vertical growth allowed analysis the regeneration...
Wound healing in plant tissues, consisting of rigid cell wall-encapsulated cells, represents a considerable challenge and occurs through largely unknown mechanisms distinct from those animals. Owing to their inability migrate, cells rely on targeted division expansion regenerate wounds. Strict coordination these wound-induced responses is essential ensure efficient, spatially restricted wound healing. Single-cell tracking by live imaging allowed us gain mechanistic insight into the...
Plant morphogenesis relies exclusively on oriented cell expansion and division. Nonetheless, the mechanism(s) determining division plane orientation remain elusive. Here, we studied tissue healing after laser-assisted wounding in roots of Arabidopsis thaliana uncovered how mechanical forces stabilize reorient microtubule cytoskeleton for We identified that root functions as an interconnected matrix, with a radial gradient extendibility causing predictable deformation wounding. This causes...
Cell polarity is a fundamental feature of all multicellular organisms. PIN auxin transporters are important cell markers that play crucial roles in plethora developmental processes plants. Here, to identify components involved establishment and maintenance plants, we performed forward genetic screening PIN2:PIN1-HA;pin2 Arabidopsis (Arabidopsis thaliana) which ectopically express predominantly basally localized PIN1 root epidermal cells, leading agravitropic growth. We identified the...
Abstract Polar auxin transport in the Arabidopsis (Arabidopsis thaliana) root tip maintains high levels around stem cell niche that gradually decrease dividing cells but increase again once they transition toward differentiation. Protophloem differentiates earlier than other proximal tissues and employs a unique “canalization” machinery is thought to balance efflux with retention. It consists of proposed activator PIN-FORMED (PIN) carriers, cAMP-, cGMP- Calcium-dependent (AGC) kinase PROTEIN...
Abstract Angiosperms have evolved the phloem for long-distance transport of metabolites. The complex process development involves genes that only occur in vascular plant lineages. For example, Arabidopsis thaliana, BREVIS RADIX (BRX) gene is required continuous root protophloem differentiation, together with PROTEIN KINASE ASSOCIATED WITH BRX (PAX). and its BRX-LIKE (BRXL) homologs are composed four highly conserved domains including signature tandem separated by variable spacers....
Abstract Trajectories of cellular ontogeny are tightly controlled and often involve feedback-regulated molecular antagonism. For example, sieve element differentiation along developing protophloem cell files Arabidopsis roots requires two antagonistic regulators auxin efflux. Paradoxically, loss-of-function in either regulator triggers similar, seemingly stochastic failures individual precursors. Here we show that these patterning defects distinct non-random. They can be explained by...
Methylation of lysine 4 in histone 3 (H3K4) is a post-translational modification that promotes gene expression. H3K4 methylation can be reversed by specific demethylases with an enzymatic Jumonji C domain. In Arabidopsis thaliana, H3K4-specific JUMONJI (JMJ) proteins distinguish themselves the association F/Y-rich (FYR) Here, we report jmj14 mutations partially suppress reduced root meristem size and growth vigor brevis radix (brx) mutants. Similar to its close homologs, JMJ15, JMJ16 JMJ18,...
Abstract Polar auxin transport in the Arabidopsis root tip maintains high levels around stem cell niche that gradually decrease dividing cells but increase again once they transition towards differentiation. Protophloem differentiates earlier than other proximal tissues and employs a unique ‘canalization’ machinery is thought to balance efflux with retention. It consists of proposed activator PIN carriers, AGC kinase PAX; its inhibitor, BRX; PIP5K enzymes, which promote polar PAX BRX...
Abstract Plant morphogenesis relies exclusively on oriented cell expansion and division. Nonetheless, the mechanism(s) determining division plane orientation remain elusive. Here we studied tissue healing after laser-assisted wounding in roots uncovered how mechanical forces of stabilize reorient microtubule cytoskeleton for We revealed that root functions as interconnected matrix with a radial gradient extendibility causing predictable deformation wounding. This causes instant redirection...